Hello, Roman.

Generally looks good to me.  One minor nit.

On Wed, Aug 02, 2017 at 05:55:30PM +0100, Roman Gushchin wrote:

+static ssize_t cgroup_max_descendants_write(struct kernfs_open_file *of,
+					   char *buf, size_t nbytes, loff_t off)
+{
+	struct cgroup *cgrp;
+	int descendants;
+	ssize_t ret;
+
+	buf = strstrip(buf);
+	if (!strcmp(buf, "max")) {
+		descendants = INT_MAX;
+	} else {
+		ret = kstrtouint(buf, 0, &descendants);

                     ^^^^^^^^^^^
		     shouldn't this be kstrtoint?

Thanks.

-- 
tejun